摘要
花生种子吸胀后迅速修复膜系统的完整性，调动各种代谢过程，导致蛋白质、ＲＮＡ及ＤＮＡ的生物合成，包括ＤＮＡ的修复，这些生理生化过程反映了种子品质水平，发生劣变的种子，膜修复延迟，代谢活性减弱，蛋白质和核酸生物合成能力下降。应用Ｃａ￣（２＋）和多胺预处理或ＰＥＧ渗调可改善种子萌发前期的生理状态，提高播种品质。
After the imbibition of peanut seed,the repair of membrane integrity initiat-ed rapidly,The rate of Respiration and ATP content increased.The activities of en-zymes were activated.On the basis of the metabolic events,the degradation and mobilization of storage proteins,and the biosynthetic capacities of protein,RNA and DNAwere effective. Seed quality was represented by these physiological and biochemical pro-cesses.As seeds deteriorated,the repair of membrane delayed and the metabolism de-clined,esp. the replacement of conserved mRNA,the occurrence of damaged ribosomalRNA and the repair of DNA,Pretreatment of Ca￣(2+) ,polyamines or osmoconditioningwith PEG will improve the physiological situation of the early stage of germinatingseeds,The viability,vigour and the quality of seeds can be improved.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
1994年第2期115-122,共8页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家自然科学基金
高等学校博士点科研基金资助项目
关键词
花生种子
种子品质
萌发
劣变
peanut seed,seed quality,germination,deterioration,repair
